Why and How to Flush the Water Heater in Your Rental

For both property owners and tenants, a reliable water heater is essential. Hot water plays a key role in daily comfort—everything from showers to dishwashing and laundry depends on it. Over time, however, water heaters can accumulate sediment and mineral deposits, which reduce their efficiency and lead to costly repairs. That’s why flushing the water heater regularly is so important, especially in rental homes. For landlords working with property management companies in Beaverton, Oregon, scheduling routine water heater maintenance can help extend the lifespan of appliances and keep tenants satisfied.

Why Flushing a Water Heater Matters

  1. Improves Efficiency
    Sediment—caused by minerals in the water—forms an insulating layer between the heating element and the water. This forces the heater to work harder, resulting in higher energy costs and reduced efficiency. A routine flush restores peak performance.
  2. Extends the Lifespan of the Unit
    Replacing a water heater can be a costly endeavor. By flushing the tank at least once a year, landlords can prevent corrosion and prolong the unit’s lifespan, avoiding unnecessary expenses.
  3. Prevents Unpleasant Noises
    Popping or rumbling sounds often signal sediment accumulation. These noises not only annoy but also warn that the heater is under strain.
  4. Delivers Cleaner Hot Water
    Mineral deposits can discolor water or cause it to have an unpleasant odor. Regular flushing keeps the water clean and safe for daily use.
  5. Helps Avoid Emergencies
    Left unchecked, sediment buildup can lead to leaks or total heater failure. Preventive maintenance reduces the risk of tenants experiencing a sudden loss of hot water.
Proactive maintenance ensures tenant comfort and protects property value by preventing costly repairs and maintaining efficient water heaters.
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How to Flush a Water Heater

Flushing a water heater doesn’t require advanced plumbing expertise, but it does demand careful attention. Here is a step-by-step process:

Step 1: Turn Off the Heater

  • Switch off the breaker for electric heaters.
  • Set the thermostat to “pilot” for gas heaters.
    This prevents the heating element from burning out when the tank is empty.

Step 2: Shut Off the Water Supply

Locate the cold-water valve at the heater’s top and turn it off. This stops additional water from entering the tank during flushing.

Step 3: Connect a Hose

Attach a garden hose to the drain valve near the bottom of the tank. Ensure the other end of the hose is positioned outside or in a floor drain where hot water can be safely released.

Step 4: Drain the Tank

Open the drain valve and let water flow out. Use caution—it will be hot. Once the flow slows, open a hot water faucet inside (such as at the sink or tub) to let air into the system and accelerate draining.

Step 5: Flush Out Sediment

After draining, briefly open the cold-water supply valve to flush out remaining sediment. Continue until the water runs clear.

Step 6: Refill the Tank

Close the drain valve, detach the hose, and reopen the cold-water supply. Once the tank refills, open each hot water faucet in the home to expel trapped air.

Step 7: Restore Power or Gas

Restore power for electric heaters by switching the breaker on, or return the gas thermostat from “pilot” to your chosen setting.
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Role of Beaverton, Oregon Property Management Companies

While tenants may sometimes be able to perform simple maintenance tasks, water heater flushing is typically handled by landlords or property management companies in Beaverton, Oregon. Professional management ensures that maintenance is completed safely, on schedule, and without inconvenience to tenants.
Including water heater flushing in routine maintenance reduces emergency calls, lowers tenant utility costs, preserves property value, and provides peace of mind for landlords and renters.
  • Lower utility costs for tenants.
  • Preserve long-term property value.
  • Provide peace of mind for both landlords and renters.

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Flushing the water heater in your rental property is a straightforward yet crucial task that saves money, extends the unit’s life, and boosts tenant satisfaction. Landlords who work with Beaverton, Oregon, property management partners can trust that this essential maintenance step is consistently and properly performed.
Stay proactive to protect your investment and create a better experience for tenants—a win-win for all.
Let us save you the time, money and hassle of managing your rental property yourself! Maintenance can be a hassle but it doesn’t have to be! Learn more about our property management services by calling us at (503) 646-9664 – Talk to a Live Person – Our office answers the phone 9 AM to 5 PM Monday through Friday – or click here to connect with us online. 
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